Weekly cycle timing mechanism with shaft securing means for predetermined adjustable programming cam assembly

ABSTRACT

Security timing apparatus for simulating occupancy in a building by turning on and off certain electrical lights and/or minor appliances such as a radio to deter a burglar from breaking into the building. This apparatus has a set of disk cams carried on a shaft which is driven at a rate of one revolution per week by a synchronous clock motor. Each of the cams in the cam set has a plurality of cam formations on its periphery for opening and closing a respective switch which turns on and off one or more of the above-mentioned lights or appliances. The cam formations on each cam differ in pattern and position from those on the periphery of each of the other cams in the set. Each of the cams of the cam set is secured to the shaft in any one of seven preselected fixed positions to provide many different sequences of operation of the lights and appliances each day and on each different day of the week.

United States'Patent n91 C0e 1 .1 1 WEEKLY CYCLE TlMlNG MECHANISM wi'rn SHAFT, sECuRmC M ANs r011 PREDETERMINEDIADJUSTABLE PROGRAMMING CAM'ASSEMBLY [76] Inventor: Robert L.'Coe, St. ldouisQMo,

22 Filed: Jan. 26, 1973 1 t 21 Appl.,No.: 327,617

I Related US. Application Data ,[63] Continuation of Ser. N o. 2 00,4i28, Nov. 19, I971,

abandoned. r521 us. zoo/3811A, 200/381) 511 1m .c1..; 6 ..11011|.4s/1s .[58] Field of Search 200l18, 33 19,35 R,

v I References Cited I UNITED STATESPATE NTSh Y Y 2/1956- .;Everard 200/38 DA 2,889,419 6/1959 Miller et al. 200/153 LB x 2,960,582 11 19 0 Harris 200/38 DA 2,963,628 ,12 1960 1051mm, .200/38 BA x- 3,2 21,117 11 1965 'Simmons. ..74/568X the week.

Primary Examiner-J R. Scott 7 AttorrieyStuart N. Senniger et al.

% 57 1 ABSTRACT Security timing apparatus for simulating occupancy in a1 building by turning on and off certain electrical lights and/or minor appliances such as a. radio to deter a burglar from-breaking into the building. This apparatus has a set of disk cams carried on a shaft which is driven at a rate of one revolution per week by a synchronous clock motor. Each of the cams in the cam set has a plurality of cam formations on its periphery for opening and closing a respective switch which turns on and off one or more of the above-mentioned lightsor appliances. The cam formations on each cam differ in pattern and'positi'on from those on the pe riphery of each of the other cams in the set. Each of 1 the cams of the cam set is secured tothe shaft in any one of seven preselected fixed positions to provide many different sequences of operation of the lights and appliances each day and on each different day of 5 Claims, 5 Drawing Figures I l abandoned.

illustrate typical tiniers.

= pancy is merely simulated.

SHAF'FSECURlNGM-EANS FOR s I PREDETERMINEDADJUSTABLE k PRO RAM I GC ASSEMBL I rC o sS -RE EIi NCE YTEdRELAT DAfi T N I This applicationisms-continuation ofniy 'copending 'appliea'tionSer; N0.2Q0,428, filed Nov 19, 1 97l,now

4 BAcKG ou'NnoF Ti ie'in'vENT1oN L,

it This-invention relates to a 'secur itytirning apparatus and particularly t o,suc h sapparatusrwhich simulates occupany in a building andlessens the rislt of burglary by W intermittently energizing and deenergizing one or more electrical circuits for predetermined time intervals thereby to turn on and off certainselected lights and/or r electrical appliances (e."g.; "a radio or "televisionfset).

t, i Timers have been used to :sin ulate occupancybut such units have controlled electrical circuits or lamps t to turn them on and off at thesame1times.eachday.

Sucha simple repetitive pattern isnot likely to deceive an observer as tothe' occupancy. ofthe building. Timing than one circuit arealso known. However; thesehave not been used in the"field of security apparatus? and is ra di-fferent pattern of circ'uitry energiza'tion every day for each circuit. r a i 1 US. Pat. Nos. 2,688,36

or single sequencet'of ;operatio n of several such appara- =tus used in the areavand thereby ascertaining that; occu- SUMMARY oFTH-EnvvEN noiv e Arnon gr the many' objects -:ofthis invent ion maybe noted the provision ofsecu rity tiniingrapparatus for 6111-: I eng-i-aing and vdeenergiz'zing selected elect rical circuits" 1 for realistically simulating occupancy of a building; the

provision of such security apparatus whichthaslan extremely large number of possible sequences or patterns ofoperation;and the provision of such apparatus which is of economical construction andreliablebpefition;

y i 'In general,security timingapparatusof this invention ,j cornprises a-case; a-' synchronous- ,-electric motor mounted within 'the case; an outputshaft"rotatably driven by thelmotorwgat a rate ofnonecrevolution per" vweek, andka-stitofdislf; cams car-ried on theshaftfforro- 1 tationgtherewith. Each cam thastseven-.different:peripheralzones corresponding tothe daysflof'the week,t;and a plurality oflcarnaformations are provided on thelperipheryof eachicam with the cam formations oneach cam Iln: the cam set differing in pattern and position" from those .onzthe peripheryofseachrof thekother cams :in-:the.set: Each switch:hasaswitcharmiwhichwengages thelperipheryiofa:respectivetcamiand which is nioved in response to rotation of -its-,.respectivecam= toppen andwclose' eachrespective switch athe rebyintermittently. energizing and 'deenergizin'g-ithese electrical :circuits: The shaft includes, means for securing the s'et oficams it WEEKLY cYcLE rrMiNcM cHANrsM 'wmi; I

of the switch in relation to the actual time bf the'day. j f skier DEsCRIi'ribN OF THE DRAWINGS I": FIG] is a front elevation of security tinting" a para l none provided multiple circuit control in which there 3o m 1 Referring to the-drawings, security timmgappa'ratuis; h ofthis invention, indicated in its entirety at l; for energizing and deener gizing selectedelectricalcircuits'in a t, building (egg-Q, eleotriclamps and small electrical appliane'es such-as a radio or television set) 'Ito simulate be; cupancy-of the building is s'hownto cornprise a case 3" having a synchronous electric clockin tor s mountec l therein. This motor drives a shaft 7 via a reduction gear "assembly generallyindicated at 9 ata rate of one revo-f 740' shown in FIGS Q2 and 3, shaft 7 carries a set of disk cams generally indicatedat 11 for rotation with thef 'f ;s,haft,, th e cams in this set beingindividually indicated atl fl'a, ll'band 110. A switch assemblygenerallyiindicated at 1'3hhaving switches 13a," 13b and 1 3c therein il-naddition to turning electrical circuits on Land off'to simulateoccupancyi, itis impoirtant that 'security-timing apparatus in wide use inonearea :(ile :a subdivision or anapartmenlt cornplex)haverlifferent:sequences'of op-' a -eration to prevent a "burglar (from detecting; a standard- "drawings. o 7 t 4 J l EscRIPTioNoFrne pnerisnnsn thereon with each being positioned in any one {of seven fixed positions relative to the" shaft whereby manydi'fferen't sequences of operation of thesw it'ches are l providedi' A'Qlial is affixed to the shaft'fo'r rotation therewith and is divided into seven equal arcua'te. secw tions, each sectioncorresponding to one dayl ofthe week and being dividedintointervals denoting the time of the clay. A one-way clutch-for the motor .is ovided to permit the shaftto be manually rotated in the directionof rotation of the shaft for setting the sequencing tus'ofthis inventionwith parts brokenaway; I

ofits topjwall broken away;

parts removed forlclarity; and

a FIG. 5 is an enlargedvertical sectionon line s -s bf 1 "Corresponding reference characters indieateicorresponding parts throughout the 'severalxvie w'sof the EMBODIMENT lution per week;(i.e., l/ 168 revolution fper hour) ismounted withinQ-thecase These switches are operable in response to rotation of the cam set forturningvon andoff the lights and appliances connected thereto. A

plurality of cam (formations or notches 115, see FIG. .4) a h isprovided on theperipheryofeachcain of carnset 11; Thetcam formationsion each earn rdififerin patternland position from those aon -the;,-periphery offeach of the other camsin acani setwllfor purposesas -willfappea 'r. Eachaswitchofbthefswitchassernhly hasaswitch arm as respectivelyindicatednat' 17a, 17b and 170 whichenf I gagesthe periphery. of a respective earnand whiChL- zmovessinresponse to the slowly'rotating' camsbe'tween, an open" tposition' -(tfheposition ofswitch arm 17b and A 17caslshownin FIG. 1);in whichitsflrespe'ctive switch is open and a closed position (the n position of switch arm*=1'-7k1-) in which its respective switeh is closed. :Eac'h switchqarm .is springflbiased for movement into the nojtches ofzits respective :cam thereby toclose itsswitch andfis held lini aiswitcheopen. position when the outer, ,end o'ffthe switch arm .isnot aligned 'with a notch but is inuen'gagement with the unnotched peripheryof its respectivelcam; i I l e I i FIG. 2 is a side elevation of this apparatus with;its-

, F IG. 4 is a vertical section 'on line 4 4' of with a v 3' As shown in FIGS. 2-5, means generally'indicated at l9'carried by shaft 7 are provided for securing the cams of cam setll on the shaft with each cam independently being positioned in any oneof seven preselected fixed.

: positions relative to, the shaftgthesej seven fixed posi- -tions corresponding'to the days of theweek. Means l9. permit. each one of the cams 11a, 11b or .1 1c to be se lectively positioned on shaft .7 in any one of seven fixed positions thereby to change the angular relation of the cams in the set relative to one another and thus change I holes 65 in mounting member 47 andyin mounting member 51.-Each bushing-includes a shank portion 67 r and a head 69 withthe shankportionsofthe bushings being received by holes 65 and with the heads positioning shaft 7 and cam set 11 between the mounting mem- "her and the support member.

the sequencing of the switches .l3a', 13b and 13c relative to one another so that many: different sequences of;operation of the switches on different days of the weekrnaybeattained. r

A dial 21 affixed to the outer end of shaft 7 rotates with the shaft.- This dial is' divided" into .seven equal arof the week; and being divided into intervals asindi- .of flange 71 with-cam.l1b againstflits back face. A; spacer 75 having seven equidistantly spaced holes, 77

corresponding. to holes 57 in the cams and .to holes 73 in'the flange is positioned betweencam' 11b and 110.

cuate sections 23, each section corresponding to a day cated at 25 denoting thetime of the day. Motor is 7 provided with a one-way'clutch 27 for permitting output shaft 7 to be. manually rotated, in the direction of rotation of the shaft (i .e., clockwise as shown by the arrows in FIG. l) for setting the sequencing of cam set 11 in relation to theactual time of the day. Aknob 29 is affixed to the outer end of shaft 7 to facilitate turning of the shaft, and an index mark 31 is provided on case 3'as a reference markfor the markings 25 on the dial.

7 More particularly, case 3 is a box-like structure having a bottom wall33, a front wall 35, a back wall 37,

side wall's'39, and atop wall 41'. Shaft 7. extends out bepower is selectivelysupplied to these outlets whenlthe respectivejswitchesare in' their closed positions. An

electrical power cable 'pas'ses through back wall 37 for supplying powerfrom a conventional 120 vac wall outlet to motor 5andto the switch assembly forener gizing receptacles 43a, 43b and 43c when their r espec 'tiv'e switches are'closed'.

; A mounting member 47 extends diagonally within casei 3 from oneupper corner of the case (its upperright corner as shown in FIG. 1) to the opposite-lower corner (its lower left corner). Reduction gear assembly 9 along with motor 5 is secured to the back face of the mounting member by screws 49. A diagonal support member 51 spaced apart frommounting member47 is secured-to the mounting member by screws 53 withspacers 55 surrounding the screws betweenthe mount ing member and support member for maintaining the As shown in FIG. 4, each cam 11a, llband l lehas seven equidistantly spaced holes '57 surroundingahole, .59 at its center'through which shaft; 7 extendsi-"Ag shown in vFIG., 5, outputflshaft 7 issecured to adrive shaft 61 extending'outwardly from reduction gearas- Screws 79. which constitute indexing members extend through-holes-57 in thecams and through the corresponding holes 73 and 77in the flange and in the spacer to fix the cams relative to the flange for rotation with shaft 7. Each cam is independentlypositioned on shaft 7 relative to the other cams in any one of the seven preselected positions provided by the seven equally spaced holes57 in each cam. It will beunderstood that other means may becutilized Ltosecure the cams on the shaft, e.g., by providing sevensplines on the shaft which engage corresponding notches-in an opening at the center of each of the cams, or by adheringthecams to one another by means of a mastic or adhesive material. I i 1 I Each cam 11a, 11b, 11c has notches 15 provided on its periphery for opening and closing: a respective switch'l3aal3b or 13c. As shown by thearrow'inFlG. 4, cam set-l1 rotates clockwise and each notch has a leading edge 81 for permitting a respective switch, arm 17a, l7b'or 17cto suddenly snap intothe. notch thus closing corresponding switch 13a, 13b. or 13c to energize its respective receptacle'43a, 43b. or 43c," and a top of the trailing edge) corresponds. to a predetermined time interval during which the switch is' in its closed position. Each cam has seven: different peripheral zones, as shown in FIG. 4 andas indicated at 84, corresponding to the days of the week. The sequence ofoperation of a switch during a one-weekperiod is determined by the placement and length ofthe notches in the zones 84'of its'respective cam-.Two or more of the notches may be positioned close'togetherwithin one of mittent occupancyofa room by turninglthe lights or electrical-appliancesin the room, on and off-two-or' more times duringthe'course of the day.

sembly 9. Thisdrive shaft has a flat, rectangularcross; j

section and the rear end of the output shaft-has a cone-,- sponding slot 62 ,the rewithin which receives shaft ,61;

j' touts closed ,POSltlOl'l by the leading edge of a'second for connecting the output shaftto the drive shaft. Shaft 7 is journalled in bushings 63 which are received .in

-Trailing.edg'es-8;3 preferably are; inclined away from.

'the .direction1of. rotation of cam set 'll to facilitate movement oftheswitcharm to its open position;- By inclining the trailing edges successive notches mayv :be

" placed quite vclosely together so that a switch arm may bemoved to-its fully opened position-bythe=trailing I edge of the first-notch. andthen be permitted to move notch in ,as short-atime as possible. With inclined trailing edges the structural strength, of the marginal portion of the (disk cams'is great enough "so that little or ,noneor the circular per-ipheral'edge of the cam need be H included between the upper portion of the trailing'edge of the first notch and the leading: edge of the second NOICheSJ I'S arepositioned in he :seven different f 'zones84 of *cams:lla; '1lbillcat. predetermined posi- I tionsso that the leading and trailing edges '81 and'83, "respectively; engagetheinrespec'tivejswitch arms 1'7 a, 17b; 170 to open and-close theirfrespective switchesat predetermined times of'theday; Thus, thelocation of leading edge 81 andthellength of wthe notches iinea'ch r [of the zones of a cam, determine the 'time of the day at which the switch controlled by each-jcam turns on its respective light and/or appliance and the length of time during which thelightand/or applianceremains turned 7, on! Furthermore with the position/and length of the u I notches in each zone184of'each cam o'f'cam setll {being differentfroni thoses-in' zones of theother"cams; I manydifferent sequencesof operation of switches 113a, 3,135 and 13c on differ ent day s of the weekat'e attained by-assembling" the cams of the ca n'set m en-arr 7 in different positions relativef -tol -one another. Thus, with a cant set as. shown in the'f drawings having three cams andwith each cam having seven fixed positionsyatotal l 1 of'343=-(i.e., 7 X .7 X 7.) sequences of operation of the switches may be attained. This large number of possible sequences ofoperationinsures.thatif the threediffeb ent 1camsare-placed on shafti'lfiandsecured in their. fixed positions'in accordance witlia schedule 'of assembly during manufacture of thetimer; thesequence of a operationof variousrtiming apparatus ofthis" invention 7 v is likely'to 'be differentlfromoneianotherif security timing apparatus of this invention were in- ;clu'ded in every apartment of a large apartment bunding, the 2,401 (i.e., 7 X 343) different possible se I quences of operation of the various-lights and/or-appliwhich of the apartments the lights are controlled by a timer in accordance with an observable sequence of timer of this invention. I i It-i's particularly advantageous that the switchesl3a, f

13b and 13; be so: positioned relativeto the disk cams llai 11b and ile, and :be of such a typethat the internal contacts thereof are held. open fwhile the switch 5 arms are in engagement with the unnotched peripheries ofthe respective cai ns; and that the switch 'arms'are bioperation and thus determining which apartments are not occupied. Moreover, the dimensional tolerances in the placement of the notches in the cams of camset 11, v "the: irnprobability of identicalsetting of days of the week, and the unlikelihood that users of two timers could each adjust the dials'of their respective timers to operate the switches'at precisely'the'saine time gmake it even more diificult -for a burglar to detectLinMhich of, the apartments the lights therein are controlled by a ased to move into notches l5 thereby-to close these 7 contacts. This is because the electrical loads to be in- -In operatiomr thesecurity tiining apparatus l of this invention .may be readily connected to 'various 'electrical lamps andlor' appliances to simulate occupancy in a building fordeterring burglars froin breaking into the building. Thetirner isiplaced in abuildingi'n which octerniit'tently energized by the's'ecu'rity tirningapparatus I h I of this inv'e'ntionare generally incandescent lamploads I and b'ecause these switches ISa-c are small(pr'e'ferably. of the microswitch type)and must'reliablyi continue to close and reopen these circuits over the extended life v of such apparatus. lncandescent'la'mp loads havethefi characteristic ofinitially drawing current "at alevel which is about '14 times greater than the normal operating current drawntf'l his high inrush current, due tothe initial low resistance of incandescent lamp filaments,-

T poses a serious circuit closing'burden on the contacts cupancy is-to be s mulated and by eans or their own v H cords or extension cables fselected lamps andappliances indifferent areas offtliebuildingare pluggedinto .reeeptaclesj43a, 43b and 430 (theswitchejs ofthelamp's. v and appliances "should be closedso "that theymay be controlled by vthe timer). Power cable is plugged into a wall outlet for supplying power to apparatus 1 for v driving motor, 5 and for supplying power to switches 13a, l3b'and l3c forenergizingthe lamps and" appli- 'ances when the'switches are closed. Knob 29 is manuallytwisted to turn dial 21 affixedon shaft 7 clockwise until the index mark 31 is in'approximate alignment relative to the proper interval 25 so as vtoindicate the ac- I tual time of the day (e.g., 6:15PM) inany one of the of the small switches which areiparticularly useful'as" componentsjinlthe apparatus of this invention. in suring the maximum'speed dream r closing asQthe r switch arm drops into a notch, the life of these switches" is greatly increased. If this arrangement were not iitilized and contact closing were effected ,byfithe switch arm being raised by the trailing edges 83", thegvery slow. movementof a disk carn andthe possible instability of the switch contacts as thearm is slowly lifted to a contact closing position; would result in damage to the 1 contacts by suchhigh inrush current.

It is to be understood that rotation of output shaft 7 1 at a'rate which is a multiple of one revolution per 7 days (e.g., one revolution every fourteendays) and'the use of peripheral zones 84 on earns '11 in multiples of seven arcuate sections 23."The timer is now set for o'p-v eratio n-and the switches 13a, 13b and l3c will open and close as cam set 11 rotateswith shaft .7 to turn on and off the lights and appliances at ditferent times during "the week corresponding to. thelocation of notches 15 in the cams. Therandom setting of dial 21 furtherreduces the possibility of simultaneous operation by 7 X ,3431(2,4'0l). Further, since the hour intervals '25 on dial21 arevery small, the probability of identical set seven (e.g., l4 zones) are within the scope or this invention. y In view of the above; it will be seen that the several t objects of the inventionare achieved and other advantageous results attained.

above description or shown inthe accompanying drawings shall be interpreted as illustrative and not a limitin'gsense. a

,What is claimed isi 1. A security timingfapparatus for energizing and de energizing selected electrical circuits for simulating occupancy in a building comprising:

,a case; I 7 a synchronous. electric motor mounted within said case;

an output shaft rotatably driven by the motor at a rate of one revolution per week; v a 'set of disk cams carried on said shaft for rotation therewith,'each said cam having seven different peripheral zones corresponding to thedays of the week; a plurality of cam formations provided on'the periphery of each said cam, said cam formationson each eam of said set differing in pattern and position from those on the periphery of each offthe other cams in said set; i g a plurality of switches each of which has a switch arm which engages the periphery of a respective cam least one indexing member extending from said fla'nge on said shaft in a different predetermined one of said seven fixed positions;

.4. Apparatus asi set forth in claim 1 wherein two or i more of said cam formations are provided "in at least different predetermined-one of seven preselected v d fixed positions relative to. the shaft whereby many I different sequences of operation of the switches are flattained;fi 1 H a dial affixed to said shaft forrotation therewith, "said dial being divided into seven equal arcuate sections corresponding to the days of the week, each section corresponding to a day of the week and being divided into intervals denoting the time of the days; and, l

a one-way clutch for said motor to permit said shaft to be manually rotatedin the direction of rotation -of said shaft for setting the sequencing of said switches relationto the actual time of the day. 2. Apparatus as set forth in claim 1 wherein said cam formations are notches provided in the periphery of each said cam, and wherein each said switch arm isbi ased for movement into the notches of its. respective earn thereby to close its switch and is held in a switcha circle aroundits center, said holes corresponding to said seven fixed positions, and wherein ;said camsecuring means includes a flange on said shaft and at one of said peripheralzones of one of said cams for opening and closing a respective switch two or more times in a one-day period. I

5. A security timing apparatus for energizing cupancy in a-b uilding comprising:

acase; e

a synchronouselectric motor mounted within. said case;'; a an output shaft rotatably driven by the motor at'a rate of one revolution per! week;

a setof disks carriedjon said shaft for. rotation therer with, eachsaid disk having seven differentzones corresponding to the days ofthe week; f

a plurality of switch operating means provided withinv each of the; seven zones of each said disk, said switch operating means withinjeach zone-of each disk differing in pattern and position from those within each other zone of the same and other disks in said set;

s ive to the slowly rotating switch operating means on a'respective disk to open andclose each respective switch means thereby intermittently energizing j and deenergizing said electrical circuits;

7 means carried byfsaid shaft for securing said set of disks thereon with each disk being positioned in a different predetermined one of seven preselected fixed positions'relative to the shaft whereby many different sequences of operation of the switch means are attained; I v a a dial affixed to said shaft for rotation therewith, said dial being divided into seven equal arcuate sections corresponding tofthedays of the week, each section corresponding to'a day'of the week and being divided into intervals denoting the time of the daysi and, g e Y a clutch for said motor to permit said shaft to be manually rotated for setting the sequencing ofjsaid switch means in relationto the. actual ,timeof the day. 1

and de-t energizing selected electrical circuits for simulating ocaplurality of switch means eachiof which is respon 

1. A security timing apparatus for energizing and deenergizing selected electrical circuits for simulating occupancy in a building comprising: a case; a synchronous electric motor mounted within said case; an output shaft rotatably driven by the motor at a rate of one revolution per week; a set of disk cams carried on said shaft for rotation therewith, each said cam having seven different peripheral zones corresponding to the days of the week; a plurality of cam formations provided on the periphery of each said cam, said cam formations on each cam of said set differing in pattern and position from those on the periphery of each of the other cams in said set; a plurality of switches each of which has a switch arm which engages the periphery of a respective cam and which is moved in response to its respective slowly rotating cam to open and close each respective switch thereby intermittently energizing and deenergizing said electrical circuits; means carried by said shaft for securing said set of cams thereon with each cam being positioned in a different predetermined one of seven preselected fixed positions relative to the shaft whereby many different sequences of operation of the switches are attained; a dial affixed to said shaft for rotation therewith, said dial being divided into seven equal arcuate sections corresponding to the days of the week, each section corresponding to a day of the week and being divided into intervals denoting the time of the days; and, a one-way clutch for said motor to permit said shaft to be manually rotated in the directiOn of rotation of said shaft for setting the sequencing of said switches in relation to the actual time of the day.
 2. Apparatus as set forth in claim 1 wherein said cam formations are notches provided in the periphery of each said cam, and wherein each said switch arm is biased for movement into the notches of its respective cam thereby to close its switch and is held in a switch-open position when it is not aligned with such notches but is in engagement with the unnotched periphery of its respective cam.
 3. Apparatus as set forth in claim 1 wherein each said cam has seven equidistantly spaced holes arranged in a circle around its center, said holes corresponding to said seven fixed positions, and wherein said cam-securing means includes a flange on said shaft and at least one indexing member extending from said flange through one of said seven holes in each cam for positioning each cam in the cam set relative to the others on said shaft in a different predetermined one of said seven fixed positions.
 4. Apparatus as set forth in claim 1 wherein two or more of said cam formations are provided in at least one of said peripheral zones of one of said cams for opening and closing a respective switch two or more times in a one-day period.
 5. A security timing apparatus for energizing and deenergizing selected electrical circuits for simulating occupancy in a building comprising: a case; a synchronous electric motor mounted within said case; an output shaft rotatably driven by the motor at a rate of one revolution per week; a set of disks carried on said shaft for rotation therewith, each said disk having seven different zones corresponding to the days of the week; a plurality of switch operating means provided within each of the seven zones of each said disk, said switch operating means within each zone of each disk differing in pattern and position from those within each other zone of the same and other disks in said set; a plurality of switch means each of which is responsive to the slowly rotating switch operating means on a respective disk to open and close each respective switch means thereby intermittently energizing and deenergizing said electrical circuits; means carried by said shaft for securing said set of disks thereon with each disk being positioned in a different predetermined one of seven preselected fixed positions relative to the shaft whereby many different sequences of operation of the switch means are attained; a dial affixed to said shaft for rotation therewith, said dial being divided into seven equal arcuate sections corresponding to the days of the week, each section corresponding to a day of the week and being divided into intervals denoting the time of the days; and, a clutch for said motor to permit said shaft to be manually rotated for setting the sequencing of said switch means in relation to the actual time of the day. 